28 Apr 2005 at 06:06 - 2
Yes, RP characters can PvP. There are several places they can PvP.
No, once you choose either RP or PvP, that character will always be that type. You can, however, create different characters for each, say 2 RP characters and 2 PvP characters.
Even if you just want PvP, you will have to go through the game at least once with a RP character just to get all the upgrades, equipment, and runes and such for your PvP characters to use(They can use some items you find in the RP portion of the game).